Find the zeros of the following
USE ALL THE THREE METHODS FOR EACH NUMBER ( Factoring, Completing the Squares and Quadratic Formula)
1.f(x) =3x+5
2.g(y)=y^2-3y+2
3.s(xl= -6x^2-13x+5
Please help me I need this before 2 hours to come. Please help me hpw to do this .
Please help me how do i do the three methods for each number. I'll bring back the favor when time comes
The zero of a function is the value of X when Y or F(x) = 0.
In other words it is the solution to the function.
Example: Y = 2x + 4 = 0, 2x = -4,
X = -2. So x = -2 when y = 0:
(-2,0).
2. g(y) = y^2-3y+2 = 0, C = 2 = (-1)*(-2), Sum = B = -3.
(y-1)(y-2) = 0, y-1 = 0, Y = 1, y-2 = 0, Y = 2.
Quadratic Formula:
Y = (-B +-(Sqrt(B^2-4AC))/2A =
(3 +-Sqrt(9-8))/2 = 2, and 1.
Complete the square:
y^2 -3y + 2 = 0, y^2 - 3y = -2,
y^2 - 3y + (-3/2)^2 = -2,
y^2 - 3y + 9/4 = -2 + 9/4 = -8/4+9/4, y^2 - 3y + 9/4 = 1/4,
(y-3/2)^2 = 1/4, Take sqrt of both sides: +-(y-3/2) = 1/2, Y = 3/2+1/2 = 2, -y+3/2 = 1/2, y = 1.
3. First, divide both sides by -6
to change A to 1. Then follow same procedure as #2.